Rotary mold



March 18 1924.

D. 5. DE LAVAUD ROTARY MOLD 1929 3 Sheets-Sheet 1 Original Filed Aug. 27

.INVENTOR 3M. J 'ZV.- ATTORNEYS.

March 18 1924.

. D. 5. DE LAVAUD ROTARY MOLD Original Filed Aug. 27. 1920 3Sheets-Sheet 2 A TTORNEYS.

March18, 1924. 1,486,953

D. s. DE LAVAUD ROTARY MOLD ginal Filed Aug. 27. 1920 5 Sheets-Sheet 5 IINVENTORI M n-4Mdv. 0L0. X

By W. A TTORNEYS.

Patented Mar. 1, E24.

:omurm snnsaon DE Lavaun,

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or rams, FRANCE, assrenon, In? nnsnn assien ROTARY MOLD.

Application filed August 27, 1910, Serial No. 406,444. Renewed May 6,1922. Serial No. 559,073.

To all whom it may concern Be it known that I, DIMITRI SENSAUD on'LAvAoo, a citizen of the United States of razil, and resident of Paris,France, have invented certain new and useful Improvements in RotaryMolds, described in the following specification and illustrated in theaccompanying drawings, that form part of the same.

The principal objects of the invention are toovercome the difiicultiesmet with in water jacketing rotating molds resulting from the expansionand contraction of the mold under the intermittent excessive heat towhich the mold is subjected and to devise a structure which will besimple and inexpensive to make.

The principal feature of the invention consists in the arrangement of.expansible ring sealing members between the mold and the end walls ofthe water jacket encircling same and providing longitudinal cylindricalcontact surfaces to slidably engage said sealing rings.

In the drawings Figure 1 is an elevational view in part section of amold constructed in accordance with this invention.

Figure 2 is a cross section through the mold and water jacket showingthe rotatable supports for the mold.

Figure 3 is an enlarged longitudinal sectional view of the mold wallshowing the piston ring seal for the water jacket.

Figure 4 is a View similar to Figure 1 showing a modification of thewater jacket structure. 1

In the form of device herein shown the rotatable mold 1 is mounted onrollers 2 supported within the outer cylindrical casing 3 and arrangedso as to balance the weight of the mold longitudinally and support itaxially within the outer casing.

The outer casing 3 is spaced from the mold a distance suflicient to forma Water jacket of such dimensions that the water contained therein willabsorb the heat of the .molten metal poured into the mold and radiatingtherethrough during the solidifying of the metal.

At one end of the casing-3 the inner wall is formed with the annulargrooves 4 and 5 and in the outer of these rooves is inserted aring 6which engages a ange 7 on the bell end of the moldl, a packing ring 8being inserted therebetween and forming a water tight joint.

A ring 9 is seated in the groove 5 and the inner periphery 10 is spacedfrom the mold and presents a cylindrical( surface parallel with themold. The periphery of the mold 1 is provided with an annular groove 11opposed to the surface 10 of the ring 9 and in this groove is placedasprin piston ring l2'which forms a flexible sea ed joint between themold and the ring 9. The flexible seal thus provided allows for theannular and longitudinal expansion and contraction of the mold withoutbinding and always maintains a water tight joint.

A pair of rings 13 and 14 similar to the rings 9 are arranged at theopposite end of the casing and the inner cylindrical surfaces thereofengage in water sealing contact with the piston rings 15 and 16 housedin the grooves 17 and 18 in the flange 19 of the mold 1.

It will be understood from this description that a water jacket isformed around the mold 1 which will ofier no material resistance to therotation of the. mold even when at its maximum heat and it will also bereadily seen that the roller supports 2 for the mold will allow it tomove freely in ex ansion and contraction.

ater is fed to the jacket through a pipe 20 entering the casing 3adjacent to the ring 9 and is carried away by the overflow pipe 21 atthe opposite end. The water need not be under any more pressure than isnecess to cause circulation through the water jacket.

The mold is rotated by a Pelton wheel 22 arranged on the mold 1 betweenthe rin 9 and 6 and the bell end of the mold-is cooled by the waterprojected into the wheel and circling the compartment between saidrings.

The outer casing 3 is preferably formed in sections so that if it isdesired to change the size of the mold, the upper section may be removedand the mold and rings may then be lifted out and another substitutedtherefor.

In the structure shown in Figure 4 the bell end 23 of the mold hassecured to its flanged end '24 a cylindrical member 25 which is spacedfrom the eriphery of the mold and carries the Pe ton wheel 22.

Piston rings 26 and 27 are housed in eripheral grooves at each end ofthemem er 25 and these are engaged by ring members 28 and 29 secured in theouter casing 3.

' This construction allows the water jacket to extend the full length ofthe mold. Cross reference is hereby made under the provisions of Rule43, to my copending application, Serial No. 559,072. I

What I claim as my invention is 1. In a rotary mold, the combinationwith the cylindrical mold rotatably supported and a casing encirclingthe mold and spaced therefrom to form a Water jacket, of flexible pistonrings encircling the mold and engaging the mold and casing to form awater seal.

2. In a rotary mold, a cylindrical casing, a rotary mold axiallysupported in said casing, ring members secured in said casing andextending toward the periphery of the mold, and expansible piston ringscarried by the mold and slidably and rotatably engaging said ringmembers.

3. In a rotary mold, a cylindrical casing, roller supports arranged inthe lower half of said casing, a cylindrical mold resting on said rollersupports and having annular grooves in its periphery, expansible pistonrings arranged in said grooves, and ring members forming end Walls of awater jacket secured in said casing and having cylindrical inner facesengaging in sliding and rotative contact with said piston rings.

4. In a rotary mold, a cylindrical casing, a rotary mold axiallysupported in said casing and free to expand circumferentially andlongitudinally, said mold having cylindrical flanges at the ends spacedfrom the periphery of the mold to allow water contact for the entirelength of the mold, annular. grooves in said cylindrical flanges, pistonrings in said grooves, and ring members secured to the casing at eachend and provided with cylindrical surfaces to engage said piston rings.

5. In a rotary mold, a cylindrical casing, a rotary mold axiallysupported in said casing and free to expand circumferentially andlongitudinally, a Pelton wheel secured to the mold at one end, ringmembers secured to the casing each side of said Pelton wheel, ringmembers arranged at the other end of the casing, and iston rings sealingthe space between sai mold and said ring members.

Signed at New York, in the county of New York and State of New York,this 30 day of July, A. D. 1920.

DIMITRI SENSAUD DE LAVAUD.

